Composite building structure.



P. M. STEWART.

COMPOSITE BUILDING STRUCTURE.

APPLICATION FILED FEB. 12, 1912.

Patented July 29, 1913.

1318 lllilzllf) STATES PATENT OFFICE.

PEREZ 3Y5. STEXVARI. NEW YORK, N. Y.. ASSIGNOR T DOUGLAS LB. STEWART, GFNEW YORK, N. Y.

COMPOSITE BUILDING STRUCTURE.

Specification of Letters Patent.

Patented July 29, 1913.

Application filed February 12, 1912. SerialNo. 676,993.

drav lug representing like parts.

This in ention relates. to a eom u'rsite mrueture especially defgneiland adapted fo u-e in buildings. as u huh. and has for it objert toprovide a. substantially rustzur--r-on lrnsin; 1 sounil-deadening: 7ting lath. which is f increased i rigidity and of minimum (his purpose.I emplov o corat it w e tm utu-ted naeiul, ,gu'isi a hit-0i she tttflil'ttl with :14 vlzult cement and layers or sheets of as llt'r llfipnpcr. and pro-vill sa d corrugated rt with tr ughliape-i alley havingwal which :lircwc f om the bottom l bottom walls haw e 'ieiui awaythere- I T or projections, me. plastic material s and serv toInetallivtilly me ed sheet. The ie further bonded to the h the, naturalbond he in material when moist and in; to form hem whu-h are embe w thinthe al the pl the :n= o-=.

Flglllt l is :1 per-pectiw view of n co nposite wall or structureembodying; illlb 1ncntion. with :1 portion of, the plastic inalerinlomitted. Fig. 2, an enlarged section of the asbestos wrolectedcorrugated metal sheet shown in r i 1. Pi 3. a lmrizontal section on theline lf'ig. 4, a section on the line -l-l, Fig. 1. Fig. 5, a section onthe e 5 5. Fig. l. and Fig. 6, a modification in section to be re erredto.

The CUD'lPfinll't tructur comprises a membet (1 of corriwuted. metal anda member I) of plastic mot l such as concrete. T he member a... asbestosprotected metal sheet. {see 1 1g. 2}, comprising e. metal sheet 10, andlayers 1'2, 13, of asbestos or like matezial secured h the opoositesurfaces of the metal sneer 19 by layers 14 of asphalt or like adhesivematerial, The member a is prmifled with wriugations having aubsiuiitiallwalls l5, .6, lo-

i horiz ntally thereto.

cated in substantially parallel planes and joined by inclined side Walls17, which form With said bottom walls tron h-shaped valleys 19 havingdiverging site Walls. The bottom walls 15, 16 have extended from themlips or projections 20, 21, whichv extend in opposite directions and mayand preferably will be formed by cutti openings 22, preferably ii thebottom wa ls, and bending the out portions at an angle to said walls.The projections or lips 20, 21, may be of any suitable shape andpreferably substantially circular as herein represented, (see Fig. 3),and they may and preferably will be bent so to incline with relation tosaid bottom walls.

The corrugated member a. is secured to suitable uprights or supports 23,only one of which is shown, by bolts 24 or otherwise, and are arrangedwith the valleys running at an angle to said uprights and preferably Theplastic member 1 Z; is then applied by u trowel or other means,

to one side of the corrugated member as 5 shown in Figs. 1, l and 5. orto both sides thereof as shown in Fig. 3. The plastic material isapplied in such quantity as to fill the \nlleys 19 and form a plasticlayer beyond the bottom walls of the valleys, and the material whichfills the valleys also passes through the openings as shown in Fig. 5 toform a plastic bond 25 for uniting the plastic member to the corrugatedmetal member, while at. the. same time, the plastic member ismetallically bonded to the metal member. by the lips or projections 20,21, which bond may be strengthened by making the lips or projections sothat the plastic material is interposed between the metal sheet and theouter end of the lips.

From the above description, itwill be seen, that a composite structureof a corrugated asbestos protiated metal member and a member of plasticmaterial formed, in which the members are bonded together within thevalleys by portions of said me e hers and Withouhthe use of extraneousmembers, and also by the natural born between the plastic material whenmoist as; the asbcstos sheets, whereby a fireresisting wall or partitionof light weight may be obtained at a minimum ex ense. Furthermore theasbestos layers of the asbestos protected metal serve to increase thefire-resisting properties of the structure, and also render the metallicbonding of the plastic member to the corrugated metal member is effectedwithin the valleys of the said corrugated member and as a result theplastic layer can be made of reduced thickness beyond or outside of thebottom walls of the valleys, whereby the cost and Weight of thecomposite structure may be materially reduced.

By making the corrugated sheet with trough-shaped valleys having sidewalls which diverge from the bottom walls of said valleys, the layers ofasbestos and asphalt whic cover the metal sheet are not broken orcracked at the bends or corners in the metal sheet, as the said bends orcorners are made round and not sharp, and as a result a rustless lath isobtained which is'strong and rigid.

Claims:

A composite building structure composed of a corrugated metal memberhavin trough-shaped valleys provided With sub Copies 0! this patent maybe obtained for five cents each, by addressing the I stantially parallelbottom 'walls and diverg-' ing side walls connecting said bottom Walls ibonding devices integral with i and having said walls, a waterproofingand insulating cement covering the surfaces of said metal i member,layers of asbestos fabric aflixed to by said cement, and a member ofplastic material enveloping the I bonding devices 1n the valleys on oneside of said metal memone surface of the metal member. and on bothsurfaces of the bonding devices in the i alleys of said surface by anatural bond; ing of the fibers of the asbestos fabric with the plasticmaterial, substantially. as described.

In testimon whereof, I have signed my the opposite surfaces of saidmetal member her and united to the asbestos fabric 011' name to thisspecification in the presence of two subscribing witnesses.

PEREZ M. STEWART.

\Vitnesses JAs. H. CHURCHILL,

1 J. MURPHY.

"Commissioner of Patents,

Washington, D. C.

